from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    app_name: str = "svg-service"
    app_env: str = "development"
    app_port: int = 9020
    api_v1_prefix: str = "/api/v1"

    auth_header_name: str = "X-API-Key"
    admin_api_key: str = "admin-local-dev-key"
    viewer_api_key: str = "viewer-local-dev-key"

    postgres_host: str = "postgres"
    postgres_port: int = 5432
    postgres_db: str = "svg_service"
    postgres_user: str = "svg_service"
    postgres_password: str = "svg_service_dev_password"

    svg_max_file_size_bytes: int = 10 * 1024 * 1024
    svg_max_elements: int = 25000

    svg_allow_internal_use_references_only: bool = True
    svg_forbid_foreign_object_v1: bool = True
    svg_forbid_style_v1: bool = False
    svg_forbid_image_v1: bool = True

    svg_display_enabled: bool = True
    svg_display_mode: str = "passthrough"
    svg_display_hide_small_text: bool = False
    svg_display_min_text_font_size: float = 8.0
    svg_display_hide_technical_text: bool = False
    svg_display_remove_hidden_elements: bool = True
    svg_display_force_viewbox: bool = True
    svg_display_technical_text_patterns: str = "debug,tech,helper,tmp,service"

    storage_root_dir: str = "/data"
    publish_preview_retention_per_variant: int = 2

    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        case_sensitive=False,
        extra="ignore",
    )

    @property
    def admin_keys(self) -> set[str]:
        return {item.strip() for item in self.admin_api_key.split(",") if item.strip()}

    @property
    def viewer_keys(self) -> set[str]:
        return {item.strip() for item in self.viewer_api_key.split(",") if item.strip()}

    @property
    def database_url(self) -> str:
        return (
            f"postgresql+asyncpg://{self.postgres_user}:{self.postgres_password}"
            f"@{self.postgres_host}:{self.postgres_port}/{self.postgres_db}"
        )

    @property
    def storage_original_dir(self) -> str:
        return f"{self.storage_root_dir}/original"

    @property
    def storage_sanitized_dir(self) -> str:
        return f"{self.storage_root_dir}/sanitized"

    @property
    def storage_normalized_dir(self) -> str:
        return f"{self.storage_root_dir}/normalized"

    @property
    def storage_display_dir(self) -> str:
        return f"{self.storage_root_dir}/display"

    @property
    def storage_preview_dir(self) -> str:
        return f"{self.storage_root_dir}/preview"


settings = Settings()